5 min read
Linux kernel f2fs NULL pointer dereference
Mounting a crafted f2fs image triggers a NULL pointer dereference in f2fs_recover_fsync_data.
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null-pointer-dereference
3 min read
Linux kernel ext4 NULL pointer dereference
ext4_empty_dir in fs/ext4/namei.c allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) can return zero after a crafted ext4 image is mounted.
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Linux kernel btrfs root node NULL pointer dereference
btrfs_root_node in fs/btrfs/ctree.c allows a NULL pointer dereference because rcu_dereference(root->node) can return zero when a crafted btrfs image is mounted.
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Linux kernel btrfs NULL pointer dereference
A crafted btrfs image triggers a NULL pointer dereference in btrfs_verify_dev_extents because fs_devices->devices is mishandled inside find_device (fs/btrfs/volumes.c) in Linux kernels before 5.1.
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